From: Markus Trippelsdorf <markus@trippelsdorf.de>
To: Theodore Ts'o <tytso@mit.edu>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>, linux-ext4@vger.kernel.org
Subject: mounting with lazytime doesn't work on ext4
Date: Mon, 18 Sep 2017 21:26:44 +0200 [thread overview]
Message-ID: <20170918192644.GA232@x4> (raw)
I switched back to ext4 yesterday, because my btrfs fs got corrupted.
However mounting with lazytime doesn't work, neither specifying it in
/etc/fstab nor a manual remount. It looks like the option is simply
ignored.
Strace shows, e.g.:
# mount -o lazytime /boot
mount("/dev/sdc2", "/boot", "ext4", MS_LAZYTIME, NULL) = 0
EXT4-fs (sdc2): mounted filesystem with ordered data mode. Opts: (null)
/dev/sdc2 on /boot type ext4 (rw,relatime,data=ordered)
# mount -o remount,lazytime /var
mount("/dev/sdb2", "/var", 0x12c4460, MS_REMOUNT|MS_NOATIME|MS_LAZYTIME, NULL) = 0
EXT4-fs (sdb2): re-mounted. Opts: (null)
/dev/sdb2 on /var type ext4 (rw,noatime,data=ordered)
When I set "sb->s_flags |= MS_LAZYTIME;" unconditionally in
fs/ext4/super.c:5057 (just deleting the if statement), then lazytime
gets used when I remount.
I'm running the latest git tree (4.14.0-rc1).
--
Markus
next reply other threads:[~2017-09-18 19:33 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-18 19:26 Markus Trippelsdorf [this message]
2017-09-19 8:35 ` mounting with lazytime doesn't work on ext4 Markus Trippelsdorf
2017-09-19 10:18 ` [PATCH] VFS: Handle lazytime in do_mount() Markus Trippelsdorf
2017-09-19 10:37 ` [PATCH v2] " Markus Trippelsdorf
2017-09-19 15:25 ` Lukas Czerner
2017-09-30 7:10 ` Markus Trippelsdorf
2017-09-19 14:46 ` mounting with lazytime doesn't work on ext4 Lukas Czerner
2017-09-19 14:55 ` Markus Trippelsdorf
2017-09-19 11:00 ` Lukas Czerner
2017-09-19 11:03 ` Markus Trippelsdorf
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